Home / 142,628.11-213,947.12-67,709.66

Finding the Fourth Proportional to 142,628.11, 213,947.12 and 67,709.66

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Solution

The fourth proportional to 142,628.11, 213,947.12 and 67,709.66 is: 101,566.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,628.11 : 213,947.12 = 67,709.66 : x
  2. Step 2: Convert to fraction form
    142,628.11/213,947.12 = 67,709.66/x
  3. Step 3: Cross multiply
    142,628.11x = 213,947.12 × 67,709.66
  4. Step 4: Simplify right side
    142,628.11x = 14,486,285,852.72
  5. Step 5: Solve for x
    x = 14,486,285,852.72/142,628.11
  6. Step 6: Final answer
    x = 101,566.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.